import { asyncRouterMap, constantRouterMap } from '@/router';
import { hasPermission } from '@/utils/permission';

/**
 * 递归过滤异步路由表，返回符合用户角色权限的路由表
 * @param asyncRouterMap
 * @param roles
 */
function filterAsyncRouter (asyncRouterMap, roles) {
  const accessedRouters = asyncRouterMap.filter(route => {
    if (hasPermission(roles, route)) {
      return true;
    }
    return false;
  });
  return accessedRouters;
}

const permission = {
  state: {
    routers: constantRouterMap,
    addRouters: []
  },
  mutations: {
    SET_ROUTERS: (state, routers) => {
      state.addRouters = routers;
      state.routers = constantRouterMap.concat(routers);
    }
  },
  actions: {
    GenerateRoutes ({ commit }, data) {
      return new Promise(resolve => {
        const { roles } = data;
        // 动态构造权限列表
        let accessedRouters = filterAsyncRouter(asyncRouterMap, roles);
        commit('SET_ROUTERS', accessedRouters);
        // commit('SET_ROUTERS', asyncRouterMap); // 调试开启全部路由
        resolve();
      });
    }
  }
};

export default permission;
